JP3036104B2 - Camera that can shoot at multiple shooting angles of view - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera capable of photographing at least two photographing angles of view.

[0002]

2. Description of the Related Art For example, in a camera having a bifocal lens capable of setting two focal lengths and capable of photographing at two different photographing angles of view, a conversion lens is inserted and retracted in the optical path of a finder. By doing so, it is known that the finder magnification can be changed according to the focal length (photographing angle of view).

However, such a camera requires a space for retracting the conversion lens in the camera body. Particularly, in a camera having a built-in electronic flash device, the conversion lens is retracted in addition to the space for the electronic flash device. Since it is necessary to secure a space, there is a problem that the size of the camera must be increased.

An object of the present invention is to provide a camera capable of photographing at a plurality of photographing angles of view while minimizing the size of the camera.

[0005]

FIG. 1 shows an embodiment of the present invention.
The present invention will be described in association with (a) and (b). The present invention is provided with an electronic flash device, which enables photographing with at least two kinds of photographing angles of view, and also allows the photographing device to be positioned in the optical path of the finder 11 (FIG. 3). By inserting and retracting the conversion lenses 6a and 6b, the present invention is applied to a camera in which the finder magnification can be changed according to the shooting angle of view. The light emitting unit 12 of the electronic flash device can be switched between a protruding position protruding from the camera body 1 and a storage position housed in the camera main body 1, and is formed by switching the light emitting unit 12 to the protruding position. The configuration is such that the conversion lens 6a is retracted into the space SP in the camera body 1 to solve the above-mentioned problem. According to a second aspect of the present invention, the light distribution from the light emitting unit is changed in conjunction with the change in the angle of view.

[0006]

When the light emitting portion 12 of the electronic flash device is switched to the projecting position, a space SP is formed in the camera body 1 and this space S is formed.
The conversion lens 6a is retracted in P. With such a configuration, an increase in the size of the camera can be suppressed to a minimum. In the sections of the means for solving the problems described above and the operation that describe the configuration of the present invention, the drawings of the embodiments are used to make the present invention easy to understand, but the present invention is not limited to the embodiments. Not something.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. 1A and 1B are front sectional views of a camera according to the present invention. Reference numeral 1 denotes a camera body, 2 denotes a bifocal switching type photographing lens protruding from the front of the camera body, 3 denotes a patrone room, 4 denotes an aperture, and 5 denotes an AF block. The taking lens 2 has a first focal length (for example, 35 mm) and a second focal length (for example, 70 mm) that is larger than the first focal length.
mm), and the switching is performed by operating a changeover switch (not shown). That is, the photographing lens 2 can set two kinds of photographing view angles.

Reference numeral 6 denotes a converter unit which can be moved in the horizontal direction in front of a finder 11 shown in FIG. 3, and 12 denotes a light-emitting portion of a pop-up type electronic flash device.
2 is a storage position stored in the camera body 1 (FIG. 2)
And a protruding position (FIG. 1) protruding from the camera body 1.

FIG. 3 shows a drive mechanism of the converter unit 6 and the light emitting unit 12. The converter unit 6 has a first insertable and retractable front face of the finder 11.
And the second conversion lenses 6a and 6b are held, and the first conversion lens 6a is
When the lens is located in front of
The finder magnification corresponding to the focal length of
When the conversion lens 6b is positioned in front of the finder 11, the finder magnification corresponding to the second focal length is set. The boss 6c protruding from the lower part of the converter unit 6 is engaged with a long hole 13a formed at one end of the lever 13, and the lever 13 can rotate integrally with a gear G1 fixed at the other end. You. Also lever 13
Both ends of a spring 14 are attached to a boss 13b protruding from the boss 13a and a boss 1a fixed in the camera body 1.
Thus, the lever 13 is urged counterclockwise in the state shown in FIG. 1A, and is urged clockwise in the state shown in FIG. 1B.

G2 is a notch gear having a gear portion G2a that can mesh with the gear G1, and G3 is a notch gear G2.
A cam gear that is coaxially rotatable with the
The cam 16 fixed to 3 can be engaged with the arm 15a of the holder 15 that can move up and down. The holder 15 holds the above-described light emitting portion 12 of the electronic flash device at the upper portion, and has a pair of upper and lower long holes 15b and 15c formed therein. The long holes 15b and 15c are fixed in the camera body 1. Guide pins 1b and 1c are engaged. The holder 15 is always urged downward by a spring 18. And
When the cam 16 comes into contact with the arm portion 15a by the counterclockwise rotation of the cam gear G3, the holder 15 is moved to the pins 1b and 1c.
The light-emitting portion 12 at the storage position is driven to the projecting position (pops up) while being guided by the spring 18 against the urging force of the spring 18. Here, when the light emitting unit 12 pops up, the space SP (FIG.
(A)) is formed.

Reference numeral 20 denotes a diffusion plate provided on the front surface of the camera. When the light emitting unit 12 is in the storage position, the diffusion plate 20 is located on the front surface of the light emitting unit 12. At this time, the irradiation light from the light emitting unit 12 is diffused by the diffusion plate 20, and
The irradiation angle substantially matches the shooting angle of view at the first focal length. On the other hand, when the light emitting unit 12 is at the protruding position, the irradiation light from the light emitting unit 12 does not pass through the diffusion plate 20, so that the irradiation angle is smaller than that described above, and
Substantially coincides with the shooting angle of view at the focal length of.

Further, an idle gear G4 and reduction gears G5 to G8 are sequentially meshed and connected to the cam gear G3.
A worm G9 attached to the output shaft of the motor 17 meshes with the gear G8.

Next, the operation of the embodiment will be described. FIG. 2 shows a state in which the photographing lens is set to a first focal length (for example, 35 mm). At this time, the first conversion lens 6a is inserted into the optical path in front of the finder 11, and 12 is in the storage position. Therefore, in this state, the first focal length (first shooting angle of view)
Is set, and the entire subject within the shooting angle of view is observed through the viewfinder 11.
In addition, when flash photography is performed, the irradiation light from the light emitting unit 12 is diffused by the diffusion plate 20 to illuminate the subject within the photography angle of view. At this time, since the converter unit 6 is urged leftward in the figure via the lever 13 by the helical spring 14, the converter unit 6 is held in the state shown in the figure and does not easily move rightward.

When a changeover switch (not shown) is operated in the state shown in FIG. 2, the taking lens 2 is moved to the second focal length (for example, 7 mm).
0 mm), the motor 17 is rotated in a predetermined direction, the rotation of the motor 17 is rotated counterclockwise through the gears G8 to G4, and the cam 16 contacts the arm 15a of the holder 15. Touch When the cam gear G3 further rotates, the cam 16 pushes up the holder 15 via the arm 15a, and the holder 15 is driven upward while being guided by the guide pins 1b and 1c, and the light emitting unit 12 of the electronic flash device is turned on as shown in FIG. ) Is driven to the protruding position (pops up). Thereby, a space SP is formed between the conversion lens 6a and the holder 15.

The notch gear G2 rotates integrally with the rotation of the cam gear G3, and after the pop-up of the light emitting section 12 is completed, the gear section G2a starts to mesh with the gear G1. As a result, the gear G1 rotates clockwise, and the lever 13 integrally rotates in the same direction. Lever 13
The converter unit 6 moves rightward in the figure due to the engagement of the long hole 13a and the boss 6c with the rotation of the lens, and the conversion lens 6a is moved to the space SP as shown in FIG. The lens 6b is inserted into the front of the finder 11. Here, the light emitting unit 1
After 2 completely pops up, the cam 16 slides on the arm 15a of the holder 15 by the rotation of the cam gear G3, so that the position of the holder 15, that is, the position of the light emitting unit 12 does not change.

When the converter unit 6 moves to a position where the switching of the conversion lenses 6a and 6b is completed, a switch (not shown) is turned on by the converter unit 6, and the motor 17 is stopped accordingly. In addition,
At this time, since the converter unit 6 is urged rightward in the figure via the lever 13 by the helical spring 14,
It is held in the state shown, and does not easily move to the left.

In this state, the conversion lens 6b
, The finder magnification corresponding to the second focal length (second shooting angle of view) is set, and the entire subject within the shooting angle of view is observed through the finder 11. Light emitting unit 1
Since the diffuser plate 20 is not located on the front surface of the light emitting unit 2, the irradiation angle from the light emitting unit 12 is smaller than that described above, and only the subject within the second shooting angle of view is illuminated during flash shooting.

As described above, at the time of switching from the first focal length to the second focal length, the conversion lens 6a is retracted into the space SP in the camera body 1 formed by the pop-up of the light emitting unit 12, Since the finder magnification corresponding to the second focal length is obtained by the conversion lens 6b, the size of the camera can be reduced as compared with the case where the conversion lens is retracted regardless of the light emitting unit 12.

In the above description, an example is described in which two conversion lenses 6a and 6b are provided according to the first and second focal lengths. However, one conversion lens may be provided. That is, for example, the finder magnification corresponding to the second focal length may be obtained without the conversion lens, and the finder magnification corresponding to the first focal length may be obtained when the conversion lens is inserted. The electronic flash device may be capable of emitting light only when the light emitting unit pops up.

Furthermore, although an example using an electronic flash device in which the light emitting portion pops up above the camera has been described, an electronic flash device that pops up on the side of the camera may be used. Furthermore, a camera that changes the focal length of the shooting lens to obtain a different shooting angle of view has been described. However, the camera that changes the shooting angle of view by performing trimming shooting to designate printing only in a predetermined trimming area in the film exposure area is described. May be.

[0021]

According to the present invention, the electronic flash device is of the pop-up type, and the conversion lens for changing the finder magnification is retracted into the space in the camera body formed by switching the electronic flash device to the projecting position. So
The camera can be downsized.

[Brief description of the drawings]

FIG. 1 is a front view of a camera showing a state in which a light emitting unit is popped up.

FIG. 2 is a front view of the camera showing a state where a light emitting unit is in a down state.

FIG. 3 is a diagram illustrating a driving mechanism of a conversion lens and a light emitting unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Camera main body 2 Photographing lens 6 Converter unit 6a, 6b Conversion lens 11 Finder 12 Light emitting part 15 Holder 16 Cam 17 Motor 20 Diffusion plate G1-G9 Gear SP space

Claims (2)

(57) [Claims] An electronic flash device is provided, which enables photographing with at least two types of photographing angles of view, and a conversion lens is inserted into and retracted from an optical path of the viewfinder, so that the viewfinder can be adjusted according to the photographing angle of view. In a camera capable of changing magnification, a light emitting portion of the electronic flash device can be switched between a projecting position protruding from the camera body and a storage position housed in the camera body, and the light emitting portion is switched to the projecting position. A camera capable of photographing at a plurality of photographing angles of view, wherein the conversion lens is retracted into a space in the camera body formed by the contact. 2. The camera according to claim 1, wherein the light distribution from the light emitting unit is changed in conjunction with the change in the shooting angle of view. .